Method and forming machine for deforming a hollow workpiece
OwnerJohan Masseeinventor
Life of this patent
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Abstract
The invention relates to a method and a forming apparatus for deforming a hollow workpiece having at least one open end, wherein the workpiece is clamped down in a clamping device, a first forming tool is placed into contact with the outer surface of the workpiece, said workpiece and said tool are rotated about an axis of rotation relative to each other and said workpiece is deformed by means of said first tool. A second forming tool is placed into the cavity defined by the workpiece and into contact with the inner surface of the hollow workpiece, after which the workpiece is deformed by means of said second tool.
Claims20
A method for deforming a hollow workpiece having at least one open end, wherein the workpiece is clamped down in a clamping device, a first forming tool is placed into contact with the outer surface of the workpiece, at least one of said workpiece and said first forming tool are rotated about an axis of rotation relative to each other and said first forming tool follows one or more desired paths with respect to the workpiece with a component parallel to the axis of rotation so as to work said workpiece;
- and wherein a second forming tool is placed into the cavity defined by the workpiece, and into contact with the inner surface of the hollow workpiece, and the workpiece is deformed beyond the end of the workpiece by means of said second forming tool.
A forming machine comprising:
- a clamping device for clamping down a hollow workpiece to be deformed, which has at least one open end;
- a first forming tool being placeable into contact with the outer surface of the workpiece while the workpiece is being worked to cause deformation in an inward direction;
- a driver configured to rotate at least one of said workpiece and said first forming tool relative to each other about an axis of rotation, such that said first forming tool is able to follow one or more desired paths with respect along the workpiece with a component parallel to the axis of rotation so as to work said workpiece;
- and
- at least one second forming tool, being insertable into the workpiece and placed into contact with an inner wall of the workpiece, such that said wall is deformed outwards.
A method for deforming a hollow workpiece having at least one open end, the method comprising:
- clamping the workpiece in a clamping device;
- engaging an outer surface of the workpiece with a first forming tool and working the workpiece, wherein said first forming tool follows one or more desired paths with respect to the workpiece with a component parallel to the axis of rotation so as to work said workpiece;
- rotating at least one of said workpiece and said first forming tool about an axis of rotation relative to each other and;
- and
- engaging an inner surface of the workpiece with a second forming tool through the open end into a cavity of the workpiece and applying force with the second forming tool so as to deform the wall between the inner surface and the outer surface outwardly.
Dependencies are inferred from the claim text.